<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
    <title>Bootstrap 实例 - 组件对齐方式</title>
	<link rel="stylesheet" href="http://cdn.static.
		runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="http://cdn.static.run
	ob.com/libs/jquery/2.1.1/jquery.min.js"></script>
	<script src="http://cdn.static.runoob.com/
	ibs/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
    <nav class="navbar navbar-default" role="navigation">
        <div class="container-fluid">
            <div class="navbar-header">
                <a href="#" class="navbar-brand" href="#">菜鸟教程</a>
            </div>  
            <div>
                <!-- 向左对齐 -->
                <ul class="nav navbar-nav navbar-left">
                    <li class="dropdown"> 
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Java
                            <b class="caret"></b>
                        </a>
                       <ul class="dropdown-menu">
                        <li><a href="#">jmeter</a></li>
                        <li><a href="#">EJB</a></li>
                        <li><a href="#">Jasper Report</a></li>
                        <li class="divider"></li>
                        <li><a href="#">分离的链接</a></li>
                        <li class="divider"></li>
                        <li><a href="#">另一个分离的链接</a></li>
                       </ul>
                    </li>
                </ul>
                <form class="navbar-form navbar-left"  role="search">
                    <button type="submit" class="btn btn-default">向左对齐 -- 提交按钮</button>
                </form>
                <p class="navbar-text navbar-left">向左对齐--文本</p>
                <!-- 向右对齐 -->
                <ul class="nav navbar-nav  navbar-right">
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            Java
                            <b class="caret"></b>
                        </a>
                        <ul class="dropdown-menu">
                            <li><a href="#">jmeter</a></li>
                            <li><a href="#">EJB</a></li>
                            <li><a href="#">Jasper Report</a></li>
                            <li class="divider"></li>
                            <li><a href="#">分离的链接</a></li>
                            <li class="divider"></li>
                            <li><a href="#">另一个分离的链接</a></li>
                        </ul>
                    </li>
                </ul>
                <form class="navbar-form navbar-right" role="search">
                    <button type="button" class="btn btn-default">向右对齐--提交按钮</button>
                </form>
                <p class="navbar-text navbar-right">向右对齐--文本</p>
            </div>
        </div>
    </nav>

</body>
</html>